Cast side frame for car trucks



H. H. WOLFE A ril a @225.

GAS T SIDE FRAME FOR CAR TRUCKS Filed Jan awed Apr. 7, 1925.

UNITED STATES 1,532,792 PATENT OFFICE.

HARRY H. WOLFE, OF COLUMBUS, OHIO, ASSIGNOR TO THE BUCKEYE STEELCASTINGS COMPANY, OF COLUMBUS, OHIO. I

CAST SIDE FRAME FOR CARTRUCKS.

. Application filed January '2, 1923. Serial "No. 610,250.

To all whom it may concern.

Be 1t known that I, HARRY H. \VQLFE, a

citizen of the United States,and a residentof Columbus, in the county ofFranklin and State of Ohio, have invented certain new and usefulImprovements in Cast Side Frames for Car Trucks; and I'do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilledin the art to which itappertains to make and use the same.

This invention relates to east side frames for car trucks and hasspecial reference to the construction of the spring seat.

In the construction now generally employed, there is a curved jointbetween the top of 'the bottom tension member, which forms the seat,and'the side column, and there is a marked tendency for the metal totear at the joint. Frames have failed in service on account of thestrain, and the object of my invention is to provide a constructionwhich will avoid the usual bend in the essential part of the member andeliminate, to a large degree, the tendency of shrinkage cracks to occurin the corner formed by the column and the bottom tension member. Such aconstruction is illustrated in the accon'ipanying drawings,'in whichFigure 1 is a side elevation of one form of side frame embodying theinvention;

Figure 2 is, a central vertical section;

Figure 3 is a detail longitudinal sectionon transverse .the line 33 ofFig. 2;

Figure 4 is a detail transverse section on the line 44 of Figure 1;

Figure 5 is a side elevation of another embodiment of the invention;

Figure 6 is a detail section-on the line 66 of'Figure 5. I

The side frame is cast in one integral structure and includes acompression memher 1, a bottom tension member 2, a diagonal tensionmember 3 extending between the bottom tension member and the end of thecompression member, and a column 4 extending vertically between thebottom tension member and the compression member. In the constructionheretofore employed, as above stated, the web of the side column iscarried down to the member 2 and merges into the same at the point 5through a curved jolnt which is inherently weak under the stress towhich it is subjected when the spring seat is 'crosssectio-n.

loaded. Moreover, the web'of the diagonal tension member is locatedbelow and in spaced relation to the corner or point 5 and the top of thebottom tension member so that it fails to furnish a direct support tothe partreceiving the strain. According to my invention, the web of thecolumn is deflected outwardly, as at 6, so that a clear space isprovided immediately above the bottom tension member 2. The deflectedportion 6 is at rightangle to the tension member 3 so that it moreeffectually sustains and braces said member, and the tension memberpasses obliquely across the corner of the spring seat and defines astrut of inverted-arch form, as shown at 7, connected with-the tensionmem ber orspring seat 2 by side webs 8. .At the junction of the seat 2and the tension member 3, an opening 9 is formed through the web of theseat, by coring the mold in an obvious manner, thereby avoiding theformation of shrinkage cracks in the casting. An opening is provided inthe web of the column at 10 for the same purpose. On the under side ofthe tension member 3 is a bracket 11 extending longitudinally of themember and adapted to carry a support for the journal box of. the truck.An opening 12 is formed through the bracket at its junction with theinverted arch or strut 7 to avoid the formation of shrinkage cracks.

In Figures 1 to 4, the bracket 11 is connected with the tension memberand the strut 7 so as to present a box-like structure in cross-section.as shown most clearly in Figure 4, but this particular form is notessential, and in Figures 5 and 6 the bracket is shown as consisting ofa web or plate 13 joined to the tension member by a central stem 1presenting a structure I-shaped in Vhile the form shown in Figures l to4 has greater strength to resist lateral stresses, the form shown in Figuresfi and 6 is simpler and easier to manufacture. I Having fullydescribed my invention what I claim as new'and desire to secure byLetters-Patent, is

1. A east side frame for car trucks having a spring seat and a diagonaltension member united with the spring seat at the end thereof, thespring seat having an opening therethrough at its junction with thetension member.

2. A east side frame for car trucks comprising a spring seat, a diagonaltension member united with the spring seat at the end of the same, and aside column united at 1ts lower end with the tension memberat a pointabove the spring seat, there being lil openings through the seatandthrough the column at their respective junctions with the tensionmember.

3. A east side frame for car trucks comprising a spring seat, a diagonaltension member united with the spring seat at the end thereof andforming an inverted truss beneath the spring seat, a side column unitedat its lower-end with the tension member,

and a bracket extending longitudinally on the under side of the tensionmember and, united therewith and ada ted to sup ort a journal box, saidbracket in'g unite with the inverted truss and extending outwardlytherefrom in alinement therewith.

on the under side of the same and united therewith, there being openingsthrough the webs of-the bracket, the column, and the spring seat at thejunctions of the same with the-tension memberr I Intestimony whereof, Ihave signed this specification 1n the presence". of two subscribingwitnesses.

" HARRY H. WOLFE.

Witnesses:

STERTZBACH, JOHN S MoPHERsoN.

